root-cause-analysis
Find the true source, not symptoms — systematic debugging from observation to permanent fix
Profile →npx skills add majiayu000/claude-skill-registry --skill root-cause-analysis-fabioc-aloha-airs-data-analysis --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Root Cause Analysis Skill > If you fixed it but it came back, you fixed a symptom. ## Core Principle Every symptom has a cause. Every cause has a deeper cause. Keep digging until you reach something you can *prevent*, not just fix. ## 5 Whys — Extended Example | # | Question | Answer | | - | -------- | ------ | | 1 | Why did the page crash? | JavaScript threw a TypeError on null | | 2 | Why was the value null? | The API returned an empty response | | 3 | Why did the API return empty? | The database query timed out | | 4 | Why did the query time out? | Missing index on a 10M-row table | | 5 | Why was the index missing? | No performance review in the PR process | **Root cause**: Process gap (no performance review), not the missing index. **Fix the system**: Add performance checklist to PR template, not just add the index. ### 5 Whys Traps | Trap | Example | How to Avoid | | ---- | ------- | ------------ | | Stopping at human error | "Dev forgot to add the index" | Ask *why was it possible to forget?* | | Single chain only | Only follow one branch | Branch at each Why if multiple causes | | Speculation without evidence | "Probably because of..." | Each answer must have evidence | |
- Core Principle
- 5 Whys — Extended Example
- 5 Whys Traps
- Cause Categories
- Investigation Techniques
- Binary Search Debugging
- Timeline Reconstruction
- Correlation vs Causation
- Fix + Prevent Pattern
- Common Symptom → Root Cause Patterns
- Post-Mortem Integration
- Synapses
What does the root-cause-analysis skill do?
Find the true source, not symptoms — systematic debugging from observation to permanent fix
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill root-cause-analysis-fabioc-aloha-airs-data-analysis --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.